How jewelry gets its colour

Anodizing applies to titanium: under voltage a thin oxide layer grows on the surface and splits light like a soap bubble. There is no paint or pigment — the colour depends on layer thickness, hence on voltage. This gives durable, metallic colours that neither peel nor fade. It is a method Argentum specialises in — more in titanium anodizing.

Electroplating deposits a thin layer of precious metal onto a piece in an electrolytic bath. Gold plating gives a warm colour and a vermeil effect on silver; rhodium plating a bright, white shine and tarnish protection; silver plating refreshes brass and bronze. Durability depends on layer thickness, so a good manufacturer states it in microns. We describe our plating department on the electroplating services page.

Oxidation is controlled darkening of silver that emphasises relief and design detail. It gives a vintage effect or a modern black, depending on finish. It is often combined with polishing of raised areas so the contrast reads clearly — and here the jeweler’s hand is key, because the borders between black and shine are finished by hand. Details in oxidized silver.

Enamel is glass or resin filling the recesses of a design. It gives full, opaque colours — red, white, green — unattainable by anodizing or plating. It is valued in logo jewelry and graphic designs because it faithfully reproduces brand colours. It demands careful execution, as quality shows in the evenness of the fill and sharpness of edges.

The rule is simple: metallic, durable colours without a coating — anodized titanium; classic luxury and silver protection — plating; contrast and character — oxidation; full, opaque brand colours — enamel. Many collections combine two methods in one piece. A good manufacturer advises which will deliver the expected effect at the planned budget and durability — start with our titanium jewelry overview.